In this combo of two photos illuminated St. Sava Serbian temple, largest 

In this combo of two photos illuminated St. Sava Serbian temple, largest Orthodox church in the Balkan regions, top, and a picture of the temple with most of its lights turned off, in Belgrade, Serbia, Saturday, March 23, 2013. Organised by the World Wide Fund for Nature, earth hour is observed every year to create awareness about conservation of energy and climate change. Around the world, people and organisations will be turning their lights off from 8:30 to 9:30 pm local time. (AP Photo/Darko Vojinovic)
Associated Press
In this combo of two photos illuminated St. Sava Serbian temple, largest Orthodox church in the Balkan regions, top, and a picture of the temple with most of its lights turned off, in Belgrade, Serbia, Saturday, March 23, 2013. Organised by the World Wide Fund for Nature, earth hour is observed every year to create awareness about conservation of energy and climate change. Around the world, people and organisations will be turning their lights off from 8:30 to 9:30 pm local time. (AP Photo/Darko Vojinovic)
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